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Welcome to the International Association for Obsidian Studies (IAOS) home page. From here, you can find out about the IAOS and explore technical information related to obsidian characterization ("sourcing") studies and obsidian hydration dating methods.
NEW BOOK ONN OBSIDIAN HYDRATION DATING
NEW BOOK ONN OBSIDIAN HYDRATION DATING
A book providing a comprehensive summary of obsidian hydration dating (OHD) has been published by the IAOS and is available on Amazon. The title is: Computation of Archaeological Ages by Obsidian Hydration Dating - Science and Method, and the authors are Alexander (Sandy) Rogers and Christopher (Chris) Stevenson.
You can find more information on the new publication at the IAOS Publications page.
REFLECTIONS ON VOLCANIC GLASS
REFLECTIONS ON VOLCANIC GLASS
The Proceedings of the 2021 International Obsidian Conference is now available. Click HERE or on the image below to download a copy.
2025 IAOS CRAIG SKINNER POSTER AWARD
2025 IAOS CRAIG SKINNER POSTER AWARD
The poster award at the 2025 Society for American Archaeological Annual Meetings goes to Talia Nishida, Daniel A. Contreras, Oula Seitsonen, Audax Mabulla, Agness Gidna, Katherine M. Grillo, and Mary E. Pendergast for Obsidian Sourcing and Interaction Networks in the Tanzanian Pastoral Neolithic. We'll have more details about the poster soon.
NOW AVAILABLE - AN UPDATED VERSION OF ARCHAEOLOGICAL AGE COMPUTATION BASED ON OBSIDIAN HYDRATION
NOW AVAILABLE - AN UPDATED VERSION OF ARCHAEOLOGICAL AGE COMPUTATION BASED ON OBSIDIAN HYDRATION
A new version of Archaeological Age Computation Based on Obsidian Hydration: A Summary of the Current State of the Art, by Alexander K. Rogers and Christopher M. Stevenson, is now available for downloading.
IAOS SOURCE CATALOG REVIEWERS ARE NEEDED
IAOS SOURCE CATALOG REVIEWERS ARE NEEDED
While we continue to maintain the IAOS World Obsidian Source Catalog, our knowledge of obsidian sources outside of the United States and Canada is sometimes incomplete or inaccurate. We would like to invite any regional obsidian source specialists to have a look at the Source Catalog and get back to us (see the email address above) if you spot any problems. We'll be happy to acknowledge your participation and we'd like to thank Dr. Maria Victoria Fernandez for her help in sorting out sources in Patagonia (Argentina and Chile), South America.
TWENTY-FIVE YEARS ON THE CUTTING EDGE OF OBSIDIAN STUDIES
TWENTY-FIVE YEARS ON THE CUTTING EDGE OF OBSIDIAN STUDIES
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